Surah 24. An-Nur, Ayah 4

The term muhsanat denotes literally "women who are fortified [against unchastity]", i.e., by marriage and or faith and self-respect, implying that, from a legal point of view, every woman must be considered chaste unless a conclusive proof to the contrary is produced. (This passage relates to women other than the accuser's own wife, for in the latter case - as shown in verses {6-9} - the law of evidence and the consequences are different.

By obvious implication, this injunction applies also to cases where a woman accuses a man of illicit sexual intercourse, and is subsequently unable to prove her accusation legally. The severity of the punishment to be meted out in such cases, as well as the requirement of four witnesses - instead of the two that Islamic Law regards as sufficient in all other criminal and civil suits - is based on the imperative necessity of preventing slander and off-hand accusations. As laid down in several authentic sayings of the Prophet, the evidence of the four witnesses must be direct, and not merely circumstantial: in other words, it is not sufficient for them to have witnessed a situation which made it evident that sexual intercourse was taking or had taken place: they must have witnessed the sexual act as such, and must be able to prove this to the entire satisfaction of the judicial authority (Razi, summing up the views of the greatest exponents of Islamic Law). Since such a complete evidence is extremely difficult, if not impossible, to obtain, it is obvious that the purpose of the above Qur'anic injunction is to preclude, in practice, all third-party accusations relating to illicit sexual intercourse - for, "man has been created weak" ({4: 28}) - and to make a proof of adultery dependent on a voluntary, faith-inspired confession of the guilty parties themselves.

The most serious notice is taken of people who put forward slanders or scandalous suggestions about women without adequate evidence. If anything is said against a woman's chastity, it should be supported by evidence twice as strong as would ordinarily be required for business transactions, or even in murder cases. That is, four witnesses would be required instead of two. Failing such preponderating evidence, the slanderer should himself be treated as a wicked transgressor and punished with eighty stripes. Not only would he be subjected to this disgraceful form of punishment, but he would be deprived of the citizen's right of giving evidence in all matters unless he repents and reforms, in which case he can be readmitted to be a competent witness. The verse lays down the punishment for slandering "chaste women", which by consensus of opinion also covers slandering chaste men. Chaste women have been specifically mentioned, according to Commentators, because slandering them is more abhorrent.